Postcombe has always been referred to as a hamlet in Lewknor parish, but the population given for it in 1871 is substantial as hamlets go. It is marked separately on the map of Southeast Oxfordshire listed below (the white area adjacent to Lewknor), yet there is no evidence of it ever being more than a hamlet within Lewknor. On a road map it is on the opposite side of the M40 motorway to Lewknor and is much further away from the parish village than is South Weston.

Oxfordshire FHS covers the whole county. The Family History Society provides an interactive map to assist in locating individual parishes and also relates the society's progress in transcribing parish registers and gravestone information for that particular parish. Browse the website to see what else the society can provide.